Updated JEP: nestmates

[John Rose]

On Apr 13, 2017, at 3:21 PM, forax at univ-mlv.fr wrote:
> 
> Being lazier than linking time in my mind means doing the check at runtime the first time you access to the member.

That's an option.  I kind of like that, but there's a cost:  You can get strange failures
as a side effect of access checking.  I ran into this when prototyping nest access
checking on top of InnerClasses.  The internal JVM paths, in HotSpot, don't provide
for such errors bubbling up from access checking, nor do they provide for logic
that says "drop what you are doing and try to load a random class, right now".
In pathological cases you might start to see deadlocks.

So I'm actually more comfortable with loading the nest-top no later than linking
(i.e., verifying or preparing) any of its nestmates.  Can we get away with that?

— John